Transformer Oil Mixture from China
Transformer oil mixture is a highly refined naphthenic or paraffinic hydrocarbon blend (<50% single compound) used for electrical insulation in power transformers. It prevents arcing and cools. HTS 2710.19.45 as electrical-grade petroleum oil mixture.
Duty Rate — China → United States
25%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• ASTM D3487 compliance cert required for electrical grade verification
• Dielectric strength test results (>30kV) aid customs appraisal
• Distinguish from waste oils via PCB-free certification